regrettably

词形变化：

名词: regretter | 动词过去式: regretted | 动词过去分词: regretted | 动词现在分词: regretting | 动词第三人称单数: regrets |

同义词：

bemoan | sorrow | remorse | guilt | grief | be sorry | apologize for | feel sorry | lament | mourn | grieve over | repentance | compunction | shame | disappointment | unhappiness | rue | bewail | deplore | for | be | be sorry for | repent | sorry | penitence | ruefulness |

反义词：

content |